EP0934816B1 - Process and apparatus for manufacturing a continuous tubular sheath from a film web - Google Patents

Process and apparatus for manufacturing a continuous tubular sheath from a film web Download PDF

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Publication number
EP0934816B1
EP0934816B1 EP99101381A EP99101381A EP0934816B1 EP 0934816 B1 EP0934816 B1 EP 0934816B1 EP 99101381 A EP99101381 A EP 99101381A EP 99101381 A EP99101381 A EP 99101381A EP 0934816 B1 EP0934816 B1 EP 0934816B1
Authority
EP
European Patent Office
Prior art keywords
foil
tube
hot air
foil tube
forming
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP99101381A
Other languages
German (de)
French (fr)
Other versions
EP0934816A1 (en
Inventor
Roland Zeuschner
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Natec Reich Summer GmbH and Co KG
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Natec Reich Summer GmbH and Co KG
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Publication of EP0934816A1 publication Critical patent/EP0934816A1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B9/00—Enclosing successive articles, or quantities of material, e.g. liquids or semiliquids, in flat, folded, or tubular webs of flexible sheet material; Subdividing filled flexible tubes to form packages
    • B65B9/10—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs
    • B65B9/20—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs the webs being formed into tubes in situ around the filling nozzles
    • B65B9/2014—Tube advancing means
    • B65B9/2021—Tube advancing means combined with longitudinal welding devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/10—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using hot gases (e.g. combustion gases) or flames coming in contact with at least one of the parts to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • B29C66/1122—Single lap to lap joints, i.e. overlap joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43—Joining a relatively small portion of the surface of said articles
    • B29C66/432—Joining a relatively small portion of the surface of said articles for making tubular articles or closed loops, e.g. by joining several sheets ; for making hollow articles or hollow preforms
    • B29C66/4322—Joining a relatively small portion of the surface of said articles for making tubular articles or closed loops, e.g. by joining several sheets ; for making hollow articles or hollow preforms by joining a single sheet to itself
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/49—Internally supporting the, e.g. tubular, article during joining
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/836—Moving relative to and tangentially to the parts to be joined, e.g. transversely to the displacement of the parts to be joined, e.g. using a X-Y table
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/84—Specific machine types or machines suitable for specific applications
    • B29C66/849—Packaging machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/912—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux
    • B29C66/9121—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux by measuring the temperature
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/912—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux
    • B29C66/9121—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux by measuring the temperature
    • B29C66/91211—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux by measuring the temperature with special temperature measurement means or methods
    • B29C66/91212—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux by measuring the temperature with special temperature measurement means or methods involving measurement means being part of the welding jaws, e.g. integrated in the welding jaws
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/914—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux
    • B29C66/9141—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/914—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux
    • B29C66/9141—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature
    • B29C66/91431—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature the temperature being kept constant over time
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/914—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux
    • B29C66/9161—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the heat or the thermal flux, i.e. the heat flux
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/96—Measuring or controlling the joining process characterised by the method for implementing the controlling of the joining process
    • B29C66/961—Measuring or controlling the joining process characterised by the method for implementing the controlling of the joining process involving a feedback loop mechanism, e.g. comparison with a desired value
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B51/00—Devices for, or methods of, sealing or securing package folds or closures; Devices for gathering or twisting wrappers, or necks of bags
    • B65B51/10—Applying or generating heat or pressure or combinations thereof
    • B65B51/20—Applying or generating heat or pressure or combinations thereof by fluid pressure acting directly on folds or on opposed surfaces, e.g. using hot-air jets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B9/00—Enclosing successive articles, or quantities of material, e.g. liquids or semiliquids, in flat, folded, or tubular webs of flexible sheet material; Subdividing filled flexible tubes to form packages
    • B65B9/10—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs
    • B65B9/20—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs the webs being formed into tubes in situ around the filling nozzles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
    • B29C53/36—Bending and joining, e.g. for making hollow articles
    • B29C53/38—Bending and joining, e.g. for making hollow articles by bending sheets or strips at right angles to the longitudinal axis of the article being formed and joining the edges
    • B29C53/48—Bending and joining, e.g. for making hollow articles by bending sheets or strips at right angles to the longitudinal axis of the article being formed and joining the edges for articles of indefinite length, i.e. bending a strip progressively
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
    • B29C66/723—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2023/00—Tubular articles
    • B29L2023/001—Tubular films, sleeves
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/10—Methods of surface bonding and/or assembly therefor
    • Y10T156/1002—Methods of surface bonding and/or assembly therefor with permanent bending or reshaping or surface deformation of self sustaining lamina
    • Y10T156/1007—Running or continuous length work
    • Y10T156/1008—Longitudinal bending
    • Y10T156/1013—Longitudinal bending and edge-joining of one piece blank to form tube

Definitions

  • the invention relates to a method and a device for the production of a continuous film tube from a flat film web according to the generic term of independent claims 1 and 7.
  • Such a device and a method for producing a film tube is, for. B. known from DE 38 41 056 A1.
  • a flat film is formed by a shaping device to form a longitudinally open film tube with overlapping film edges, the film tube subsequently being fed continuously to a sealing station which welds the overlapping film edges to one another.
  • the sealing station consists of a heating element in the form of a sealing jaw, which welds the overlapping edges of the film tube under pressure.
  • the disadvantage here is that the constant contact of the film with the sealing jaw causes wear on the film and the sealing jaw, a weakening of the film being caused in the area of the sealing seam by the notch effect of the sealing jaw.
  • the speed of the sealing and the continuous film web is limited upwards in order to achieve an error-free sealing and to prevent damage to the continuous film tube.
  • JP 10 194 217 A describes a film welding process out that the hot air for welding the Sheets of edges help, but two Has guide blocks which the film edges presses against each other, which is also the film touching welding process results.
  • DE 195 08 155 A1 is a prior art according to the preamble of claims 1 and 7 remove from a method and an apparatus for Manufacture of plastic packaging for food disclosed. This is a film sealing process described in the case of hot air the two of the Hose forming portion of the film protruding ends be heated to such an extent that they liquefy. Then cold compressed air is supplied this liquefied plastic mixture has cooled so far that it solidifies again.
  • CA 1 248 437 is a film sealing machine that serves two or more to weld overlapping foils together.
  • the parts to be welded are placed between two plates Foils passed through and by means of heated gas fused together.
  • the invention is therefore based on the object Method and device for producing a propose continuous film tube which works wear-free, a high Throughput speed of the film allowed and one Prevents weakening or damage to the film.
  • An essential feature of the present invention is that welding the overlapping film edges done without contact by hot air.
  • the hot air to The film is welded from ordinary compressed air is that by suitable heating devices on a Temperature of about 170 ° Celsius is heated up and over Nozzles are fed to the film tube.
  • the Temperature and / or amount of hot air supplied adjustable and fast to the required conditions adaptable.
  • the temperature of the hot air in the Exhaust duct measured by a temperature sensor and in The heating output of the heating device depends on this regulated.
  • the sealing device comprises a housing with at least an air inlet for the compressed air, the Compressed air within the housing in a number of Distribution channels branched, the air then from the Distribution channels via overflow channels at least one Heating device is supplied. The air heated up there in turn becomes the outlet channel via overflow channels fed and via nozzles on the film tube applied.
  • the sealing device that is, the outlet nozzles for the Hot air is at a defined distance from the Foil tube arranged and do not touch it.
  • the heating device consists of an electric operated heating cartridge that includes heating coils by of the incoming air, so that the cold Air over the electrically operated heating coils is heated.
  • the main advantage of hot air sealing is that thinner films for the production of the film tube can be used as there is no contact between Foil and sealing device takes place. This gives Significant cost savings in Film material.
  • Another advantage is that Welding virtually wear-free for the Sealing device is carried out since the Sealing device not with the film tube in Touch comes.
  • the heating power of the Sealing device quickly changing Conditions such as B. Changes in film thickness etc. be adjusted. Different parameters of the Sealing device such. B. temperature, pressure of inflowing cold compressed air and flow volume of the Compressed air can be set in a wide range. However, the heating power is advantageously controlled only by varying the pressure or Flow volume, the temperature remaining constant and for example at a constant 170 ° Celsius is held.
  • Another advantage of this device is that a narrower film web can be used to Foil tubes with the same diameter as the stand the technology in which sealing jaws are used to reach. This is possible because there are none Contact welding is present, but contactless and in can be welded essentially precisely. It there is also no weakening of the film to be welded in the area of the weld, since there are no sealing jaws are used that have a notch effect on the Cause weld seam. Through the contactless Welding can speed through the continuous Foil tube can be increased.
  • the flat film web 1 which is preferably made of Plastic consists of a coil (not shown) processed and is continually a molding device consisting of a molding shoulder, through which the flat film web becomes a long side open film tube 3 with overlapping Foil edges are formed and on a cylindrical Shaped tube 4 transported in the transport direction 25 further becomes.
  • the shape shoulder 2 and the shape tube 4 are in one Bracket 5 held.
  • the molded tube 4 extends further in the transport direction 25 in the area of the sealing device 9, which a suspension 6 is attached to the machine housing.
  • the Suspension 6 is rotatable about a vertical axis in one Pivot bearing 7 mounted, the suspension 6 through a fastening screw 11 can be locked, the Part of a swivel arm 10 fastened to the holder 5 is. So that the suspension 6 is fixed to the bracket 5th connected to prevent accidental panning prevent.
  • the housing 14 is the actual sealing device via a mounting arm 8 with the suspension 6 connected.
  • one Inclination adjustment 13 is provided, by means of which the Inclination of the housing 14 with respect to the axis of the molded tube 4 can be set. This allows a more even Distance between housing 14 of the sealing device and Shaped tube 4 adjusted over the length of the shaped tube become.
  • the housing 14 of the sealing device 9 has at least an air inlet 15, the incoming compressed air by means of distribution channels 16 branching like a tree is distributed within the housing 14 and spatially distributed over overflow channels 19 of the heating device is fed.
  • the heater consists, for. B. from a first heating cartridge 17 to which a second Heating cartridge 18 connects.
  • the heating cartridges 17, 18 are approximately tubular and have a heating coil, which is in the inner volume of the heating cartridge incoming compressed air is heated.
  • the heated hot air leaves the heating cartridge 18 via overflow channels 20 and arrives at an outlet duct 21 which is in the longitudinal direction is arranged parallel to the shaped tube 4.
  • the outlet channel 21 on the side facing the molded tube 4 a plurality of outlet nozzles 22 through which the hot air exits and on the film tube guided along the molded tube 4 3 hits.
  • the film tube 3 is so on the Shaped tube 4 aligned that the overlapping Foil edges to lie opposite the outlet nozzles 22 come and through the escaping hot air continuously are welded together. It is essential that the Sealing device 9 the surface of the film tube not touched, but welding without contact takes place.
  • a temperature sensor 23 arranged by means of which the temperature of the Hot air is measured in the outlet duct 21.
  • the necessary electrics and electronics for the Sealing device is advantageously located in one separate housing 24, which gives access and maintenance of the Electronics made easier.

Abstract

Welding of the overlapping edges of the film tube (3) is effected by contactless hot air welding. An Independent claim is also included for the process equipment comprising a contactless hot air sealing unit (9).

Description

Die Erfindung betrifft ein Verfahren und eine Vorrichtung zur Herstellung eines kontinuierlichen Folienschlauchs aus einer ebenen Folienbahn nach dem Oberbegriff der unabhängigen Patentansprüche 1 und 7.The invention relates to a method and a device for the production of a continuous film tube from a flat film web according to the generic term of independent claims 1 and 7.

Eine derartige Vorrichtung und ein Verfahren zur Herstellung eines Folienschlauchs ist z. B. aus der DE 38 41 056 A1 bekannt. Es wird hier eine ebene Folie durch eine Formeinrichtung zu einem längsseitigen offenen Folienschlauch mit sich überlappenden Folienrändern geformt, wobei der Folienschlauch nachfolgend kontinuierlich einer Siegelstation zugeführt wird, welche die sich überlappenden Folienränder miteinander verschweißt. Die Siegelstation besteht dabei aus einem Heizkörper in Form einer Siegelbacke, welche die sich überlappenden Ränder des Folienschlauchs unter Druck verschweißt.
Nachteilig hierbei ist, daß durch die ständige Berührung der Folie mit der Siegelbacke Verschleiß an Folie und der Siegelbacke auftritt, wobei im Bereich der Siegelnaht eine Schwächung der Folie durch die Kerbwirkung der Siegelbacke hervorgerufen wird. Ferner ist die Geschwindigkeit des Siegelns und der durchlaufenden Folienbahn nach oben hin begrenzt, um ein fehlerfreies Siegeln zu erreichen und eine Beschädigung des durchlaufendes Folienschlauchs zu verhindern.Such a device and a method for producing a film tube is, for. B. known from DE 38 41 056 A1. Here, a flat film is formed by a shaping device to form a longitudinally open film tube with overlapping film edges, the film tube subsequently being fed continuously to a sealing station which welds the overlapping film edges to one another. The sealing station consists of a heating element in the form of a sealing jaw, which welds the overlapping edges of the film tube under pressure.
The disadvantage here is that the constant contact of the film with the sealing jaw causes wear on the film and the sealing jaw, a weakening of the film being caused in the area of the sealing seam by the notch effect of the sealing jaw. Furthermore, the speed of the sealing and the continuous film web is limited upwards in order to achieve an error-free sealing and to prevent damage to the continuous film tube.

Aus der JP 10 194 217 A geht ein Folienschweißverfahren hervor, das zwar Heißluft zum Verschweißen der Folienränder zu Hilfe nimmt, das jedoch zwei Führungsblöcke aufweist, welche die Folienränder gegeneinander preßt wodurch sich ebenfalls ein die Folie berührendes Schweißverfahren ergibt.JP 10 194 217 A describes a film welding process out that the hot air for welding the Sheets of edges help, but two Has guide blocks which the film edges presses against each other, which is also the film touching welding process results.

Aus der DE 195 08 155 A1 ist ein Stand der Technik gemäß dem Oberbegriff der Ansprüche 1 und 7 zu entnehmen, der ein Verfahren und eine Vorrichtung zum Herstellen von Kunststoffverpackungen für Lebensmittel offenbart. Darin wird ein Folienschweißverfahren beschrieben bei dem mittels Heißluft die beiden vom den Schlauch bildenden Anteil der Folie abstehenden Enden soweit erhitzt werden, daß diese sich verflüssigen. Anschließend wird mittels Zuführung kalter Druckluft dieses verflüssigte Kunststoffgemisch soweit abgekühlt daß es sich wieder verfestigt.DE 195 08 155 A1 is a prior art according to the preamble of claims 1 and 7 remove from a method and an apparatus for Manufacture of plastic packaging for food disclosed. This is a film sealing process described in the case of hot air the two of the Hose forming portion of the film protruding ends be heated to such an extent that they liquefy. Then cold compressed air is supplied this liquefied plastic mixture has cooled so far that it solidifies again.

Aus der CA 1 248 437 geht eine Folienschweißanlage hervor, die dazu dient, zwei oder mehr übereinanderliegende Folien miteinander zu verschweißen. Dazu werden zwischen zwei Platten die zu verschweißenden Folien hindurchgeführt und mittels erhitzen Gases miteinander Verschmolzen. An der Seite an der das heiße Gas zugeführt wird ist zusätzlich zu einer der Gaszufuhrseite gegenüberliegenden Seite eine weitere Platte erforderlich um einen verlaufenden Druckausgleich zu bewirken, so dass die Folien nicht flattern und nicht beschädigt werden. CA 1 248 437 is a film sealing machine that serves two or more to weld overlapping foils together. For this purpose, the parts to be welded are placed between two plates Foils passed through and by means of heated gas fused together. On the side where that means Gas is supplied in addition to one of the Gas supply side opposite side another Plate required for a continuous pressure equalization to cause so that the films do not flutter and not to be damaged.

Der Erfindung liegt deshalb die Aufgabe zugrunde, ein Verfahren und eine Vorrichtung zur Herstellung eines kontinuierlichen Folienschlauchs vorzuschlagen, welches verschleißfrei arbeitet, eine hohe Durchlaufgeschwindigkeit der Folie erlaubt und eine Schwächung oder Beschädigung der Folie verhindert.The invention is therefore based on the object Method and device for producing a propose continuous film tube which works wear-free, a high Throughput speed of the film allowed and one Prevents weakening or damage to the film.

Diese Aufgabe wird durch die kennzeichnenden Merkmale der unabhängigen Patentansprüche 1 und 7 gelöst.This task is characterized by the characteristics of the independent claims 1 and 7 solved.

Wesentliches Merkmal der vorliegenden Erfindung ist, daß das Verschweißen der sich überlappenden Folienränder berührungslos durch Heißluft erfolgt.An essential feature of the present invention is that welding the overlapping film edges done without contact by hot air.

Weiterbildungen und vorteilhafte Ausgestaltungen der Erfindung sind Gegenstand der abhängigen Patentansprüche.Further developments and advantageous refinements of Invention are the subject of the dependent claims.

So ist es z. B. vorgesehen, daß die Heißluft zum Verschweißen der Folie aus gewöhnlicher Druckluft erzeugt wird, die durch geeignete Heizeinrichtungen auf eine Temperatur von ca. 170 ° Celsius aufgeheizt wird und über Düsen dem Folienschlauch zugeführt wird. Dabei ist die Temperatur und/oder Menge der zugeführten Heißluft regelbar und schnell an die erforderlichen Verhältnisse anpaßbar.So it is z. B. provided that the hot air to The film is welded from ordinary compressed air is that by suitable heating devices on a Temperature of about 170 ° Celsius is heated up and over Nozzles are fed to the film tube. Here is the Temperature and / or amount of hot air supplied adjustable and fast to the required conditions adaptable.

Vorzugsweise wird die Temperatur der Heißluft im Auslaßkanal durch einen Temperatursensor gemessen und in Abhängigkeit davon die Heizleistung der Heizeinrichtung geregelt.Preferably, the temperature of the hot air in the Exhaust duct measured by a temperature sensor and in The heating output of the heating device depends on this regulated.

Die Siegeleinrichtung umfaßt ein Gehäuse mit mindestens einem Lufteinlaß für die Druckluft, wobei sich die Druckluft innerhalb des Gehäuses in einer Reihe von Verteilerkanälen verzweigt, wobei die Luft dann von den Verteilerkanälen über Überströmkanäle mindestens einer Heizeinrichtung zugeführt wird. Die dort aufgeheizte Luft wird wiederum über Überströmkanäle dem Auslaßkanal zugeführt und über Düsen auf den Folienschlauch aufgebracht.The sealing device comprises a housing with at least an air inlet for the compressed air, the Compressed air within the housing in a number of Distribution channels branched, the air then from the Distribution channels via overflow channels at least one Heating device is supplied. The air heated up there in turn becomes the outlet channel via overflow channels fed and via nozzles on the film tube applied.

Die Siegeleinrichtung, das heißt die Auslaßdüsen für die Heißluft sind in einem definierten Abstand zum Folienschlauch angeordnet und berühren diesen nicht.The sealing device, that is, the outlet nozzles for the Hot air is at a defined distance from the Foil tube arranged and do not touch it.

Die Heizeinrichtung besteht aus einer elektrisch betriebenen Heizpatrone, die Heizwendeln umfasst, die von der einströmenden Luft umströmt werden, so daß die kalte Luft über die elektrisch betriebenen Heizwendeln aufgeheizt wird.The heating device consists of an electric operated heating cartridge that includes heating coils by of the incoming air, so that the cold Air over the electrically operated heating coils is heated.

Wesentlicher Vorteil des Siegelns mit Heißluft ist, daß dünnere Folien zur Herstellung des Folienschlauches verwendet werden können, da keine Berührung zwischen Folie und Siegeleinrichtung stattfindet. Dadurch ergibt sich eine wesentliche Kostenersparnis beim Folienmaterial. Weiterer Vorteil ist, daß das Verschweißen quasi verschleißfrei für die Siegeleinrichtung durchgeführt wird, da die Siegeleinrichtung nicht mit dem Folienschlauch in Berührung kommt. Ferner kann die Heizleistung der Siegeleinrichtung schnell an sich verändernde Gegebenheiten, wie z. B. Änderungen der Foliendicke etc. angepaßt werden. Verschiedene Parameter der Siegeleinrichtung wie z. B. Temperatur, Druck der einströmenden kalten Druckluft und Durchflußvolumen der Druckluft können in weiten Bereichen eingestellt werden. Vorteilhaft erfolgt jedoch die Steuerung der Heizleistung lediglich durch Variierung des Drucks bzw. des Durchflußvolumens, wobei die Temperatur konstant bleibt und beispielsweise auf etwa konstant 170 ° Celsius gehalten wird. The main advantage of hot air sealing is that thinner films for the production of the film tube can be used as there is no contact between Foil and sealing device takes place. This gives Significant cost savings in Film material. Another advantage is that Welding virtually wear-free for the Sealing device is carried out since the Sealing device not with the film tube in Touch comes. Furthermore, the heating power of the Sealing device quickly changing Conditions such as B. Changes in film thickness etc. be adjusted. Different parameters of the Sealing device such. B. temperature, pressure of inflowing cold compressed air and flow volume of the Compressed air can be set in a wide range. However, the heating power is advantageously controlled only by varying the pressure or Flow volume, the temperature remaining constant and for example at a constant 170 ° Celsius is held.

Weiterer Vorteil dieser Einrichtung ist, daß eine schmalere Folienbahn eingesetzt werden kann, um Folienschläuche mit gleichem Durchmesser wie beim Stand der Technik, bei dem mit Siegelbacken gearbeitet wird, zu erreichen. Dies ist möglich, da hier keine Kontaktschweißung vorliegt, sondern berührungslos und im wesentlichen punktgenau geschweißt werden kann. Es erfolgt auch keine Schwächung der zu schweißenden Folie im Bereich der Schweißnaht, da keine Siegelbacken eingesetzt werden, die eine Kerbwirkung an der Schweißnaht verursachen. Durch das berührungslose Schweißen kann die Geschwindigkeit des durchlaufenden Folienschlauchs erhöht werden.Another advantage of this device is that a narrower film web can be used to Foil tubes with the same diameter as the stand the technology in which sealing jaws are used to reach. This is possible because there are none Contact welding is present, but contactless and in can be welded essentially precisely. It there is also no weakening of the film to be welded in the area of the weld, since there are no sealing jaws are used that have a notch effect on the Cause weld seam. Through the contactless Welding can speed through the continuous Foil tube can be increased.

Nachfolgend wird die Erfindung unter Bezugnahme auf Zeichnungsfiguren anhand eines Ausführungsbeispiels näher erläutert.The invention is described below with reference to FIG Drawing figures based on an embodiment explained.

Es zeigen:

Figur 1:
Einen seitlichen Schnitt der Vorrichtung zur Herstellung eines Folienschlauchs;
Figur 2:
eine Stirnansicht der Siegeleinrichtung mit Blick auf die Auslaßdüsen.
Show it:
Figure 1:
A side section of the device for producing a film tube;
Figure 2:
an end view of the sealing device with a view of the outlet nozzles.

Die ebene Folienbahn 1, welche vorzugsweise aus Kunststoff besteht, wird von einer Spule (nicht dargestellt) abgewickelt und gelangt kontinuierlich zu einer Formeinrichtung bestehend aus einer Formschulter, durch welche die ebene Folienbahn zu einem längsseitig offenen Folienschlauch 3 mit sich überlappenden Folienrändern geformt wird und auf einem zylindrischen Formrohr 4 in Transportrichtung 25 weiter transportiert wird. Die Formschulter 2 und das Formrohr 4 sind in einer Halterung 5 gehalten. The flat film web 1, which is preferably made of Plastic consists of a coil (not shown) processed and is continually a molding device consisting of a molding shoulder, through which the flat film web becomes a long side open film tube 3 with overlapping Foil edges are formed and on a cylindrical Shaped tube 4 transported in the transport direction 25 further becomes. The shape shoulder 2 and the shape tube 4 are in one Bracket 5 held.

Das Formrohr 4 erstreckt sich weiter in Transportrichtung 25 in den Bereich der Siegeleinrichtung 9, welche an einer Aufhängung 6 am Maschinengehäuse befestigt ist. Die Aufhängung 6 ist um eine vertikale Achse drehbar in einem Schwenklager 7 gelagert, wobei die Aufhängung 6 durch eine Befestigungsschraube 11 arretiert werden kann, die Teil eines an der Halterung 5 befestigten Schwenkarmes 10 ist. Damit wird die Aufhängung 6 fest mit der Halterung 5 verbunden, um ein unbeabsichtigtes Schwenken zu verhindern.The molded tube 4 extends further in the transport direction 25 in the area of the sealing device 9, which a suspension 6 is attached to the machine housing. The Suspension 6 is rotatable about a vertical axis in one Pivot bearing 7 mounted, the suspension 6 through a fastening screw 11 can be locked, the Part of a swivel arm 10 fastened to the holder 5 is. So that the suspension 6 is fixed to the bracket 5th connected to prevent accidental panning prevent.

Das Gehäuse 14 der eigentlichen Siegeleinrichtung ist über einen Befestigungsarm 8 mit der Aufhängung 6 verbunden. Es sind verschiedene Einstellvorrichtungen vorgesehen, um eine Ausrichtung des Gehäuses 14 gegenüber dem Formrohr 4 vornehmen zu können. Es ist eine Anschlageinstellung 12 vorhanden, welche sich am Maschinengehäuse abstützt und durch welche der Abstand des Gehäuses 15 der Siegeleinrichtung zum Formrohr 4 eingestellt werden kann. Ferner ist eine Neigungsverstellung 13 vorgesehen, mittels welcher die Neigung des Gehäuses 14 gegenüber zur Achse des Formrohrs 4 eingestellt werden kann. Dadurch kann ein gleichmäßiger Abstand zwischen Gehäuse 14 der Siegeleinrichtung und Formrohr 4 über die Länge des Formrohrs eingestellt werden.The housing 14 is the actual sealing device via a mounting arm 8 with the suspension 6 connected. There are different adjustment devices provided to oppose an orientation of the housing 14 to be able to make the shaped tube 4. It is one Stop setting 12 available, which is on Machine housing supports and through which the distance of the housing 15 of the sealing device for the shaped tube 4 can be adjusted. Furthermore, one Inclination adjustment 13 is provided, by means of which the Inclination of the housing 14 with respect to the axis of the molded tube 4 can be set. This allows a more even Distance between housing 14 of the sealing device and Shaped tube 4 adjusted over the length of the shaped tube become.

Das Gehäuse 14 der Siegeleinrichtung 9 weist mindestens einen Lufteinlaß 15 auf, wobei die eintretende Druckluft mittels baumartig sich verzweigenden Verteilerkanälen 16 innerhalb des Gehäuses 14 verteilt wird und räumlich verteilt über Überströmkanäle 19 der Heizeinrichtung zugeführt wird. Die Heizeinrichtung besteht z. B. aus einer ersten Heizpatrone 17 an welche sich eine zweite Heizpatrone 18 anschließt. Die Heizpatronen 17, 18 sind etwa rohrförmig ausgebildet und besitzen eine Heizwendel, welche die in das innere Volumen der Heizpatrone einströmende Druckluft erwärmt. Die erwärmte Heißluft verläßt die Heizpatrone 18 über Überströmkanäle 20 und gelangt zu einem Auslaßkanal 21, der in Längsrichtung parallel zum Formrohr 4 angeordnet ist.The housing 14 of the sealing device 9 has at least an air inlet 15, the incoming compressed air by means of distribution channels 16 branching like a tree is distributed within the housing 14 and spatially distributed over overflow channels 19 of the heating device is fed. The heater consists, for. B. from a first heating cartridge 17 to which a second Heating cartridge 18 connects. The heating cartridges 17, 18 are approximately tubular and have a heating coil, which is in the inner volume of the heating cartridge incoming compressed air is heated. The heated hot air leaves the heating cartridge 18 via overflow channels 20 and arrives at an outlet duct 21 which is in the longitudinal direction is arranged parallel to the shaped tube 4.

Wie in Figur 2 dargestellt ist, besitzt der Auslaßkanal 21 auf der dem Formrohr 4 zugewandten Seite eine Vielzahl von Auslaßdüsen 22, durch welche die Heißluft austritt und auf dem am Formrohr 4 entlanggeführten Folienschlauch 3 auftrifft. Der Folienschlauch 3 ist dabei so auf dem Formrohr 4 ausgerichtet, daß die sich überlappenden Folienränder gegenüber den Auslaßdüsen 22 zu liegen kommen und durch die austretende Heißluft kontinuierlich miteinander verschweißt werden. Wesentlich ist, daß die Siegeleinrichtung 9 die Oberfläche des Folienschlauchs nicht berührt, sondern das Verschweißen berührungslos stattfindet.As shown in Figure 2, the outlet channel 21 on the side facing the molded tube 4 a plurality of outlet nozzles 22 through which the hot air exits and on the film tube guided along the molded tube 4 3 hits. The film tube 3 is so on the Shaped tube 4 aligned that the overlapping Foil edges to lie opposite the outlet nozzles 22 come and through the escaping hot air continuously are welded together. It is essential that the Sealing device 9 the surface of the film tube not touched, but welding without contact takes place.

Im Bereich des Auslaßkanals 21 ist ein Temperatursensor 23 angeordnet, mittels welchem die Temperatur der Heißluft im Auslaßkanal 21 gemessen wird. In Abhängigkeit von der gemessenen Temperatur wird die Heizleistung der Heizpatronen 17, 18 geregelt und so eine dem voreingestellten Wert entsprechende konstante Temperatur der Heißluft erzielt.In the area of the outlet channel 21 there is a temperature sensor 23 arranged by means of which the temperature of the Hot air is measured in the outlet duct 21. Dependent on the heating power of the Cartridges 17, 18 regulated and so one preset value corresponding constant temperature of the hot air.

Die erforderliche Elektrik und Elektronik für die Siegeleinrichtung befindet sich vorteilhaft in einem separaten Gehäuse 24, was den Zugriff und die Wartung der Elektrik erleichtert. The necessary electrics and electronics for the Sealing device is advantageously located in one separate housing 24, which gives access and maintenance of the Electronics made easier.

Zeichnungslegendedrawing Legend

11
Folienbahnsheet
22
Formschulterforming shoulder
33
Folienschlauch (offen)Foil tube (open)
44
Formrohrforming tube
55
Halterung (f. Formschulter u. Formrohr)Bracket (for molded shoulder and molded tube)
66
Aufhängung (f. Siegeleinr.)Suspension (for sealing device)
77
Schwenklagerpivot bearing
88th
BefestigungsarmMounting Arm
99
Siegeleinrichtungsealer
1010
Schwenkarm (an Halterung)Swivel arm (on bracket)
1111
Befestigungsschraubefixing screw
1212
Anschlagseinstellungstop adjustment
1313
Neigungsverstellungtilt adjustment
1414
Gehäuse d. SiegeleinrichtungHousing d. sealer
1515
Einlaß f. HeißluftInlet f. hot air
1616
Verteilerkanäledistribution channels
1717
HeizpatroneCartridge Heater
1818
HeizpatroneCartridge Heater
1919
Überströmkanäleoverflow
2020
Überströmkanäleoverflow
2121
Auslaßkanaloutlet channel
2222
Auslaßdüsenoutlet nozzles
2323
Temperatursensortemperature sensor
2424
Gehäuse (für Elektrik)Housing (for electrics)
2525
Transportrichtungtransport direction

Claims (12)

  1. Method for the manufacture of a continuous foil tube (3) from a flat foil web (1) which is formed by a forming device consisting of a forming shoulder (2) and a forming tube (4) into a foil tube open along its longitudinal side and with overlapping foil edges, wherein the foil tube is continuously fed to a sealing device (9) which contactlessly welds the overlapping foil edges along the longitudinal side by means of hot air, characterized in that the hot air is discharged from an outlet duct (21) which is aligned with the foil tube (3) drawn over the forming tube (4) and which has a plurality of outlet nozzles (22).
  2. Method according to Claim 1, characterized in that the hot air is generated from ordinary compressed air which is heated by suitable heating devices and delivered by nozzles to the foil tube (3).
  3. Method according to Claim 1 or Claim 2, characterized in that the hot air is directed simultaneously on to a specific length of the foil tube (3) by means of a row of outlet nozzles (22).
  4. Method according to any one of Claims 1 to 3, characterized in that the temperature and/or flow of the hot air supplied is adjustable and rapidly adaptable to the conditions required.
  5. Method according to any one of Claims 1 to 4, characterized in that the temperature of the hot air in the outlet duct is measured by a temperature sensor and the heat output of the heating device is regulated as a function of the measurement obtained.
  6. Method according to any one of Claims 1 to 5, characterized in that the temperature of the hot air remains constant and is kept at a steady level of about 170°C.
  7. Apparatus for the manufacture of a continuous foil tube (3) from a flat foil web (1) which is formed by a forming device consisting of a forming shoulder (2) and a forming tube (4) into a foil tube open along its longitudinal side and with overlapping foil edges, wherein the foil tube is continuously fed to a sealing device (9) which contactlessly welds the overlapping foil edges along the longitudinal side by means of hot air, characterized in that the outlet duct (21) of the sealing device (9) is aligned with the foil tube drawn over the forming tube (4) and has a plurality of outlet nozzles (22) through which the foil (1) formed into the foil tube (3) is welded by the discharged hot air.
  8. Apparatus according to Claim 7, characterized in that the sealing device (9) has a casing (14) with at least one air inlet (15) branching into distributor passageways (16) connected by transfer passages (19) to at least one heater device (17; 18) connected in turn by transfer passages (20) to an outlet duct (21).
  9. Apparatus according to Claim 7 or Claim 8, characterized in that the outlet duct (21) extends over a certain length in the longitudinal direction of the foil tube (3).
  10. Apparatus according to any one of Claims 7 to 9, characterized in that the sealing device (9) is arranged at a defined distance from the foil tube (3) and does not come in contact with the latter.
  11. Apparatus according to any one of Claims 7 to 10, characterized in that the heating device (17; 18) consists of an electric cartridge type heater.
  12. Apparatus according to any one of Claims 7 to 11, characterized in that a temperature sensor (23) is arranged in the region of the outlet duct (21).
EP99101381A 1998-02-04 1999-01-26 Process and apparatus for manufacturing a continuous tubular sheath from a film web Expired - Lifetime EP0934816B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19804221 1998-02-04
DE19804221A DE19804221A1 (en) 1998-02-04 1998-02-04 Method and device for producing a continuous film tube from a flat film web

Publications (2)

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EP0934816A1 EP0934816A1 (en) 1999-08-11
EP0934816B1 true EP0934816B1 (en) 2002-05-15

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US (1) US20010039997A1 (en)
EP (1) EP0934816B1 (en)
JP (1) JPH11268137A (en)
AT (1) ATE217573T1 (en)
DE (2) DE19804221A1 (en)
ES (1) ES2177147T3 (en)

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AUPR406201A0 (en) * 2001-03-28 2001-04-26 Tna Australia Pty Limited Method and apparatus to aid in forming a package
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DE10319820A1 (en) * 2003-05-03 2004-11-25 Poly-Clip System Gmbh & Co. Kg Method for producing portion packs in a film tube
ES2243133B1 (en) * 2004-05-12 2006-07-01 Relats, S.A. PROCEDURE FOR THE MANUFACTURE OF PROTECTION PIPES.
DE102011015898B4 (en) * 2011-04-01 2016-10-06 Christof Schulte-Göbel Narrow area coating device and method for applying an adhesive-free heat-activatable edge coating by means of hot air or hot gas
DE102014214593A1 (en) * 2014-07-24 2016-01-28 Windmöller & Hölscher Kg Hot air sealing device and method for hot air sealing of plastic containing packaging
US10981338B2 (en) * 2018-05-01 2021-04-20 Cmd Corporation Method of controlling air temperature for making seals
CN108501387A (en) * 2018-05-10 2018-09-07 淄博洁林塑料制管有限公司 A kind of polybag or plastic tube heat-sealing device
DE102021121988A1 (en) 2021-08-25 2023-03-02 Roland Wolf Device for producing a tubular film from a strip of film using the form shoulder welding process

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JPS6172524A (en) * 1984-09-18 1986-04-14 Keiichi Isotani Method of joining thermoweldable laminated film
DE3828728A1 (en) * 1988-08-24 1990-03-01 Windmoeller & Hoelscher DEVICE FOR WELDING MULTIPLE LAYERS OF THERMOPLASTIC PLASTIC
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ITVE940014A1 (en) * 1994-03-10 1995-09-10 Pavan Mapimpianti Spa PROCESS OF WELDING OF PLASTIC FILM TO MAKE PACKAGES FOR FOOD PRODUCTS AND EQUIPMENT TO MAKE
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JPH10194217A (en) * 1997-01-16 1998-07-28 Ishida Co Ltd Packaging machine for commodity

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ES2177147T3 (en) 2002-12-01
ATE217573T1 (en) 2002-06-15
EP0934816A1 (en) 1999-08-11
US20010039997A1 (en) 2001-11-15
JPH11268137A (en) 1999-10-05
DE19804221A1 (en) 1999-08-05
DE59901428D1 (en) 2002-06-20

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